<template>
  <div class="shopcar-container">
    
    <div class="goods-list">
      <!-- 商品列表项区域 -->
      <div class="mui-card" v-for="(item, i) in goodslist" :key="item.id">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">

            <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
						<img :src="item.thumb_path" alt="">
            <div class="info">
              <h1>{{item.title}}</h1>
              <p>
                <span class="price">￥{{item.sell_price}}</span>
                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                <!-- 问题：如何从购物车中获取商品的数量呢 -->
                <!-- 1.我们可以先创建一个空对象，然后循环购物车中所有商品的数据，把当前循环这条商品的Id作为对象的属性名，count值作为对象的属性值，这样，当把所有的商品循环一遍，就会得到一个对象：{88：2，89：1，90：4} -->
                <a href="#" @click.prevent="remove(item.id, i)">删除{{$store.getters.getGoodsCount[item.id]}}</a>
              </p>
            </div>
					</div>
				</div>
			</div>
    </div>

    <!-- 结算区域 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner jiesuan">
          <div class="left">
            <p>总计(不含运费)</p>
            <p>以勾选商品 <span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span> 件，总价 <span class="red">￥{{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
          </div>
          <mt-button type="danger">去结算</mt-button>
        </div>
      </div>
    </div>

    <p>{{$store.getters.getGoodsSelected}}</p>

  </div>
</template>

<script>
import numbox from '../subcomponents/shopcar_numbox.vue'

export default {
  data(){
    return{
      goodslist:[] //购物车中所有商品的数据
    }
  },
  created(){
    this.getGoodsList();
  },
  methods:{
    getGoodsList(){
      // 1.获取到store中所有的商品的Id，然后拼接出一个用逗号分隔的字符串
      var idArr=[]
      this.$store.state.car.forEach(item=>idArr.push(item.id));
      // 如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
      if(idArr.length<=0){
        return;
      }
      // 获取购物车商品列表
      this.$http.get("api/goods/getshopcarlist/"+idArr.join(",")).then(result=>{
        if(result.body.status===0){
          this.goodslist=result.body.message;
        }
      });
    },
    remove(id,index){
      // 点击删除，把商品从store中根据传递的Id删除，同时把当前组件中的goodslist中对应要删除的那个商品，使用index来删除
      this.goodslist.splice(index,1);
      this.$store.commit('removeFormCar',id)
      // console.log('ok');
    },
    selectedChanged(id,val){
      // 每当点击开关，把最新的开关状态同步到store中
      console.log(id+"---"+val);
      this.$store.commit('updateGoodsSelected',{id,selected: val });
    }
  },
  components:{
    numbox
  }
}
</script>

<style lang="scss" scoped>
  .shopcar-container{
    background-color: #eee;
    overflow: hidden;

    .goods-list{
      .mui-card-content-inner{
        display: flex;
        align-items: center;
      }
      img{
        width: 60px;
        height: 60px;
      }
      .info{
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        h1{
          font-size: 13px;
        }
        .price{
          color: #f00;
          font-weight: bold;
        }
      }
    }

    .jiesuan{
      display: flex;
      justify-content: space-between;
      align-items: center;
      .red{
        color: #f00;
        font-weight: bold;
        font-size: 16px;
      }
    }
  }
</style>